Aug 01 18:22:46.642 INFO checking xvii-0.3.3 against 1.27.2+tmplazy for lazy_static-1
Aug 01 18:22:46.642 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 18:22:46.642 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 18:22:46.642 INFO running `"docker" "create" "-v" "/tmp/crater.qmzKQiH0hZtv:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2+tmplazy:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 01 18:22:46.937 INFO blam! c84cf6f203435142ef1688bfadced0c1f3b14de04c8388a049a0fc5111f0aa1a
Aug 01 18:22:46.939 INFO running `"docker" "start" "-a" "c84cf6f203435142ef1688bfadced0c1f3b14de04c8388a049a0fc5111f0aa1a"`
Aug 01 18:22:47.683 INFO kablam!     Checking xvii v0.3.3 (file:///source)
Aug 01 18:22:48.607 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 18:22:48.607 INFO kablam!  --> benches/convert.rs:1:1
Aug 01 18:22:48.607 INFO kablam!   |
Aug 01 18:22:48.607 INFO kablam! 1 | #![feature(test)]
Aug 01 18:22:48.607 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 18:22:48.607 INFO kablam! 
Aug 01 18:22:48.607 INFO kablam! error: aborting due to previous error
Aug 01 18:22:48.607 INFO kablam! 
Aug 01 18:22:48.607 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 18:22:48.615 INFO kablam! error: Could not compile `xvii`.
Aug 01 18:22:48.615 INFO kablam! 
Aug 01 18:22:48.615 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 18:22:48.617 INFO kablam! su: No module specific data is present
Aug 01 18:22:49.154 INFO running `"docker" "rm" "-f" "c84cf6f203435142ef1688bfadced0c1f3b14de04c8388a049a0fc5111f0aa1a"`
Aug 01 18:22:49.256 INFO blam! c84cf6f203435142ef1688bfadced0c1f3b14de04c8388a049a0fc5111f0aa1a